Polk Audio Pb Lc80
The sound Mechanics Of A Subwoofer
A subwoofer, or sub for short, is nothing more than a loudspeaker that reproduces the bass sound of the frequency. They have a limited frequency range but contrast nicely with the higher pitched sounds from an audio unit with built-in speakers. Musicians and music enthusiasts often prefer the deep tones that subwoofers produce above the typical bass sound.
The Polk Audio PSW505 Subwoofer demonstrates how a frequency range of 23 Hz to 160 Hz can make a difference in tone and crispness when using subs to bring out the best of a musical performance. Engineers of Polk have been able to tweak the voice coil alignment and suspension in the 12-inch long throw driver, called the Klippel Optimized Woofer. By achieving this, extreme volume will not distort the sound, a problem that many subwoofers have.
Back in the 60s it was a time for experimenting with music. Usually the louder the better, but the "screechy" sound wasn't very inviting so Ken Kreisel decided to take a different approach. Over the next decade he perfected a electrostatic speaker system. This came with a woofer so the frequency range would be lower. Unfortunately it wasn't until 1973 that the first subwoofer was tested professionally. This is was done by Steely Dan while making Pretzel Logic. Throughout the next 7 years there were various scenario, but just 3 years later we saw 300 Sensurround systems throughout several theaters. It provided a great way to help with sound effects in movies.
Eventually you could find subwoofers just about anywhere, and thanks to them being able to keep the audience from experiencing a complete sound blast they became even more popular. The realistic sound has been modified over the years, but back then Bose Acoustimass offered a 6" driver per channel. Well, this was in 1987, but 25 years later you see the PSW505 Subwoofer offers a 12" Bass driver. Other benefits around this cover a 300-watt amplifier and an adjustable crossover, as well as a magnetic shielding.
High volumes can often drag a subwoofer across the floor from the shear vibration of frequency so always check the bottom feet for sturdiness and steadfast material. The PSW505 Subwoofer comes with this feature because you will need it in testing the highs and lows of its capability to create just the right balance for your movies, music shows and games.
The creation of the subwoofer has evolved over the past twenty years to provide controlled bass tones to add to your home system and will never be a disappointment. Many people place small main or satellite speakers close to the stereo and spread four or five around the room to have a surround sound effect. Once you have your subwoofers set up, you'll wonder why you hadn't purchased sooner.
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